/usr/lib/python2.7/dist-packages/docutils/parsers/rst/directives/__init__.py is in python-docutils 0.12+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 | # $Id: __init__.py 7621 2013-03-04 13:20:49Z milde $
# Author: David Goodger <goodger@python.org>
# Copyright: This module has been placed in the public domain.
"""
This package contains directive implementation modules.
"""
__docformat__ = 'reStructuredText'
import re
import codecs
import sys
from docutils import nodes
from docutils.parsers.rst.languages import en as _fallback_language_module
if sys.version_info < (2,5):
from docutils._compat import __import__
_directive_registry = {
'attention': ('admonitions', 'Attention'),
'caution': ('admonitions', 'Caution'),
'code': ('body', 'CodeBlock'),
'danger': ('admonitions', 'Danger'),
'error': ('admonitions', 'Error'),
'important': ('admonitions', 'Important'),
'note': ('admonitions', 'Note'),
'tip': ('admonitions', 'Tip'),
'hint': ('admonitions', 'Hint'),
'warning': ('admonitions', 'Warning'),
'admonition': ('admonitions', 'Admonition'),
'sidebar': ('body', 'Sidebar'),
'topic': ('body', 'Topic'),
'line-block': ('body', 'LineBlock'),
'parsed-literal': ('body', 'ParsedLiteral'),
'math': ('body', 'MathBlock'),
'rubric': ('body', 'Rubric'),
'epigraph': ('body', 'Epigraph'),
'highlights': ('body', 'Highlights'),
'pull-quote': ('body', 'PullQuote'),
'compound': ('body', 'Compound'),
'container': ('body', 'Container'),
#'questions': ('body', 'question_list'),
'table': ('tables', 'RSTTable'),
'csv-table': ('tables', 'CSVTable'),
'list-table': ('tables', 'ListTable'),
'image': ('images', 'Image'),
'figure': ('images', 'Figure'),
'contents': ('parts', 'Contents'),
'sectnum': ('parts', 'Sectnum'),
'header': ('parts', 'Header'),
'footer': ('parts', 'Footer'),
#'footnotes': ('parts', 'footnotes'),
#'citations': ('parts', 'citations'),
'target-notes': ('references', 'TargetNotes'),
'meta': ('html', 'Meta'),
#'imagemap': ('html', 'imagemap'),
'raw': ('misc', 'Raw'),
'include': ('misc', 'Include'),
'replace': ('misc', 'Replace'),
'unicode': ('misc', 'Unicode'),
'class': ('misc', 'Class'),
'role': ('misc', 'Role'),
'default-role': ('misc', 'DefaultRole'),
'title': ('misc', 'Title'),
'date': ('misc', 'Date'),
'restructuredtext-test-directive': ('misc', 'TestDirective'),}
"""Mapping of directive name to (module name, class name). The
directive name is canonical & must be lowercase. Language-dependent
names are defined in the ``language`` subpackage."""
_directives = {}
"""Cache of imported directives."""
def directive(directive_name, language_module, document):
"""
Locate and return a directive function from its language-dependent name.
If not found in the current language, check English. Return None if the
named directive cannot be found.
"""
normname = directive_name.lower()
messages = []
msg_text = []
if normname in _directives:
return _directives[normname], messages
canonicalname = None
try:
canonicalname = language_module.directives[normname]
except AttributeError, error:
msg_text.append('Problem retrieving directive entry from language '
'module %r: %s.' % (language_module, error))
except KeyError:
msg_text.append('No directive entry for "%s" in module "%s".'
% (directive_name, language_module.__name__))
if not canonicalname:
try:
canonicalname = _fallback_language_module.directives[normname]
msg_text.append('Using English fallback for directive "%s".'
% directive_name)
except KeyError:
msg_text.append('Trying "%s" as canonical directive name.'
% directive_name)
# The canonical name should be an English name, but just in case:
canonicalname = normname
if msg_text:
message = document.reporter.info(
'\n'.join(msg_text), line=document.current_line)
messages.append(message)
try:
modulename, classname = _directive_registry[canonicalname]
except KeyError:
# Error handling done by caller.
return None, messages
try:
module = __import__(modulename, globals(), locals(), level=1)
except ImportError, detail:
messages.append(document.reporter.error(
'Error importing directive module "%s" (directive "%s"):\n%s'
% (modulename, directive_name, detail),
line=document.current_line))
return None, messages
try:
directive = getattr(module, classname)
_directives[normname] = directive
except AttributeError:
messages.append(document.reporter.error(
'No directive class "%s" in module "%s" (directive "%s").'
% (classname, modulename, directive_name),
line=document.current_line))
return None, messages
return directive, messages
def register_directive(name, directive):
"""
Register a nonstandard application-defined directive function.
Language lookups are not needed for such functions.
"""
_directives[name] = directive
def flag(argument):
"""
Check for a valid flag option (no argument) and return ``None``.
(Directive option conversion function.)
Raise ``ValueError`` if an argument is found.
"""
if argument and argument.strip():
raise ValueError('no argument is allowed; "%s" supplied' % argument)
else:
return None
def unchanged_required(argument):
"""
Return the argument text, unchanged.
(Directive option conversion function.)
Raise ``ValueError`` if no argument is found.
"""
if argument is None:
raise ValueError('argument required but none supplied')
else:
return argument # unchanged!
def unchanged(argument):
"""
Return the argument text, unchanged.
(Directive option conversion function.)
No argument implies empty string ("").
"""
if argument is None:
return u''
else:
return argument # unchanged!
def path(argument):
"""
Return the path argument unwrapped (with newlines removed).
(Directive option conversion function.)
Raise ``ValueError`` if no argument is found.
"""
if argument is None:
raise ValueError('argument required but none supplied')
else:
path = ''.join([s.strip() for s in argument.splitlines()])
return path
def uri(argument):
"""
Return the URI argument with whitespace removed.
(Directive option conversion function.)
Raise ``ValueError`` if no argument is found.
"""
if argument is None:
raise ValueError('argument required but none supplied')
else:
uri = ''.join(argument.split())
return uri
def nonnegative_int(argument):
"""
Check for a nonnegative integer argument; raise ``ValueError`` if not.
(Directive option conversion function.)
"""
value = int(argument)
if value < 0:
raise ValueError('negative value; must be positive or zero')
return value
def percentage(argument):
"""
Check for an integer percentage value with optional percent sign.
"""
try:
argument = argument.rstrip(' %')
except AttributeError:
pass
return nonnegative_int(argument)
length_units = ['em', 'ex', 'px', 'in', 'cm', 'mm', 'pt', 'pc']
def get_measure(argument, units):
"""
Check for a positive argument of one of the units and return a
normalized string of the form "<value><unit>" (without space in
between).
To be called from directive option conversion functions.
"""
match = re.match(r'^([0-9.]+) *(%s)$' % '|'.join(units), argument)
try:
float(match.group(1))
except (AttributeError, ValueError):
raise ValueError(
'not a positive measure of one of the following units:\n%s'
% ' '.join(['"%s"' % i for i in units]))
return match.group(1) + match.group(2)
def length_or_unitless(argument):
return get_measure(argument, length_units + [''])
def length_or_percentage_or_unitless(argument, default=''):
"""
Return normalized string of a length or percentage unit.
Add <default> if there is no unit. Raise ValueError if the argument is not
a positive measure of one of the valid CSS units (or without unit).
>>> length_or_percentage_or_unitless('3 pt')
'3pt'
>>> length_or_percentage_or_unitless('3%', 'em')
'3%'
>>> length_or_percentage_or_unitless('3')
'3'
>>> length_or_percentage_or_unitless('3', 'px')
'3px'
"""
try:
return get_measure(argument, length_units + ['%'])
except ValueError:
try:
return get_measure(argument, ['']) + default
except ValueError:
# raise ValueError with list of valid units:
return get_measure(argument, length_units + ['%'])
def class_option(argument):
"""
Convert the argument into a list of ID-compatible strings and return it.
(Directive option conversion function.)
Raise ``ValueError`` if no argument is found.
"""
if argument is None:
raise ValueError('argument required but none supplied')
names = argument.split()
class_names = []
for name in names:
class_name = nodes.make_id(name)
if not class_name:
raise ValueError('cannot make "%s" into a class name' % name)
class_names.append(class_name)
return class_names
unicode_pattern = re.compile(
r'(?:0x|x|\\x|U\+?|\\u)([0-9a-f]+)$|&#x([0-9a-f]+);$', re.IGNORECASE)
def unicode_code(code):
r"""
Convert a Unicode character code to a Unicode character.
(Directive option conversion function.)
Codes may be decimal numbers, hexadecimal numbers (prefixed by ``0x``,
``x``, ``\x``, ``U+``, ``u``, or ``\u``; e.g. ``U+262E``), or XML-style
numeric character entities (e.g. ``☮``). Other text remains as-is.
Raise ValueError for illegal Unicode code values.
"""
try:
if code.isdigit(): # decimal number
return unichr(int(code))
else:
match = unicode_pattern.match(code)
if match: # hex number
value = match.group(1) or match.group(2)
return unichr(int(value, 16))
else: # other text
return code
except OverflowError, detail:
raise ValueError('code too large (%s)' % detail)
def single_char_or_unicode(argument):
"""
A single character is returned as-is. Unicode characters codes are
converted as in `unicode_code`. (Directive option conversion function.)
"""
char = unicode_code(argument)
if len(char) > 1:
raise ValueError('%r invalid; must be a single character or '
'a Unicode code' % char)
return char
def single_char_or_whitespace_or_unicode(argument):
"""
As with `single_char_or_unicode`, but "tab" and "space" are also supported.
(Directive option conversion function.)
"""
if argument == 'tab':
char = '\t'
elif argument == 'space':
char = ' '
else:
char = single_char_or_unicode(argument)
return char
def positive_int(argument):
"""
Converts the argument into an integer. Raises ValueError for negative,
zero, or non-integer values. (Directive option conversion function.)
"""
value = int(argument)
if value < 1:
raise ValueError('negative or zero value; must be positive')
return value
def positive_int_list(argument):
"""
Converts a space- or comma-separated list of values into a Python list
of integers.
(Directive option conversion function.)
Raises ValueError for non-positive-integer values.
"""
if ',' in argument:
entries = argument.split(',')
else:
entries = argument.split()
return [positive_int(entry) for entry in entries]
def encoding(argument):
"""
Verfies the encoding argument by lookup.
(Directive option conversion function.)
Raises ValueError for unknown encodings.
"""
try:
codecs.lookup(argument)
except LookupError:
raise ValueError('unknown encoding: "%s"' % argument)
return argument
def choice(argument, values):
"""
Directive option utility function, supplied to enable options whose
argument must be a member of a finite set of possible values (must be
lower case). A custom conversion function must be written to use it. For
example::
from docutils.parsers.rst import directives
def yesno(argument):
return directives.choice(argument, ('yes', 'no'))
Raise ``ValueError`` if no argument is found or if the argument's value is
not valid (not an entry in the supplied list).
"""
try:
value = argument.lower().strip()
except AttributeError:
raise ValueError('must supply an argument; choose from %s'
% format_values(values))
if value in values:
return value
else:
raise ValueError('"%s" unknown; choose from %s'
% (argument, format_values(values)))
def format_values(values):
return '%s, or "%s"' % (', '.join(['"%s"' % s for s in values[:-1]]),
values[-1])
|